Oil-burner.



W.- SGRIMGEOUR. OIL BURNER. APPLIOATION FILED 82m. 6, 1907.

6,743. Patented 0 1;.12,1909.

D UNITED STATES PATENT ()FFICE.

WILLIAM SCRIMGEOUR, OF PORTSMOUTH, VIRGINIA, ASSIGNOR TO MIRCS FUEL-OILEQUIPMENT COMPANY, OF NORFOLK, VIRGINIA.

OIL-BURNER.

Specification of Letters Patent.

Patented Oct. 12, 1909.

Application filed September 6, 1907. Serial No. 391,631.

To all whom it may concern:

Be it known that I, \VlLLIAM SCRIMGEOUR, a citizen of the United States,residing at Portsmouth, in the county of Norfolk and State of Virginia,have invented certain new and useful Improvements in Oil-Burners, ofwhich the following is a specification.

This invention is a burner for fuel-oil, having means for spraying theoil, supplied under high pressure, and for mixing the oilspray with air,supplied under low pressure.

A burner is illustrated in the accompany ing drawing, in which thefigure is a vertical axial section.

The burner comprises a casing 1 having an air-supply pipe 2 and afuel-outlet 3. An oil-supply nozzle 4 passes through and islongitudinally adjustable in-an opening 5 in the casing, being held inadjusted position by a set-screw 6. A connection 7 receiving a flexiblemetal oil-pipe 8 is screwed into a socket 9 in the rear end of thenozzle. A stem 10 having on its outer end a fixed handwheel 11 passesthrough a gland 12 on the rear end of the connection 7. A short portion13 of this stem is threaded into connection 7, so that its rotationcauses itto move longitudinally in the nozzle 4. The nozzle has inwardlyprojecting lugs 14 near its front end, bearing on the stem 10 andholding it in central position. The discharge end of the nozzle has aspheroidal valve-seat or recess 15 and the front end of the stem has anintegral spheroidal ball 16, of the sanie curvature as the recess 15.tice the ball and recess may be spherical. The ball acts as an effectivedeflector and spraying device for the oil, which is supplied at asufliciently high pressure. say one hundred pounds to the square inch,to be thrown into spray as it is forced around and over the ball. Theconcave recess 15 causes the oil to partially envelop the ball before itis sprayed, in such manner that the spray is directed forwardly ratherthan laterally. and is thereby projected from the aperture 3 instead ofimpinging against the walls of the chamber 1. The ball also acts as aregulating and shut-off valve. A wide In pracstream of air at lowpressure, say four ounces to the square inch, is supplied through thepipe 2 and the mixed oil and air escape through the passage 3. 1

I claim:

1. In an oil burner, a casing having an air inlet and a fuel outlet, andan oil-spraying and controlling device, comprising a supply-' nozzle foroil having a concave valve-seat in its discharge end, a stemlongitudinally adjustable in the nozzle, and a combined valve anddeflector carried by said stem, having a convex face opposed to saidconcave valveseat, said parts constructed and arranged to deliver aforwardly moving spray of 011 through said fuel outlet.

2. In an oil burner, a casing having an air inlet and a fuel outlet, andan oil-spraying and controlling device, comprising a supplynozzle foroil having a spheroidal valve-seat in its discharge end, a stemlongitudinally adjustable in the nozzle, and a spheroidal valve anddeflector carried by said stem.

3. In an oil burner, a casing having an air inlet and a fuel outlet, andan oil-spraying and controlling device longitudinally adjustable in saidcasing, comprising a supplyv nozzle for oil having a concave valve-seatin its discharge end, a stem longitudinally adjustable in the nozzle,and a combined valve and deflector carried by said stem, having a convexface opposed to said concave valveseat, said parts constructed andarranged to deliver a forwardly moving spray of Oll through said outlet.

4. In an oil burner, a casing having an air inlet and a fuel outlet, andan oil-spraying and controlling device longitudinally adjustable in saidcasing, comprising a supply-nozzle for oil having a spheroidalvalve-seat in its discharge end, a stem longitudinally adj ustable inthe nozzle, and a spheroidal valve and deflector carried by said stem.

In testimony whereof. I aflix my signature in presence of two witnesses.

